My 2005 CBR600 F4i will do something like 80 mph in 2nd gear! Most of my favorite roads are roads you rarely reach 100 mph on, so obviously with a 6 speed transmission I DO NOT need to go 80 in 2nd! So, I just ordered a 15 tooth front sprocket. I debated on getting 14 tooth, but thought that might be a bit to squirley in low gear. Anyway, I'd like to hear specifics from any of you who lowered you gearing. IE; what size sprockets? How do you like it? Any trouble keeping the front end down when you roll the throttle on hard at low speed?

Boo

 

I put on a 15T. I have a few other mods, but it isn't hard to bring up the front. Mine likes to power wheelie pretty easy in first.